In this paper, we investigate the orthogonal reconstruction in orthogonal linear polarization holography. Orthogonal reproduction means that the polarization of the diffracted light is orthogonal to the polarization of the recorded signal light. Based on the newly developed polarization holography theory with the tensor method, we analyzed the prerequisite for orthogonal reconstruction and verified it experimentally by constructing an experimental platform. Through quantitative analysis and multiple experiments, the power of the diffracted light was related to the interference angle between the recorded signal light and reference light during the recording process when the diffracted light was subjected to orthogonal reconstruction. The experimental results are in good agreement with the results obtained via theoretical analysis. Thus, our knowledge related to polarization holography may be improved through orthogonal reconstruction.